JP2014032824A - Luminaire and illumination lamp fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paired lighting type luminaire and an illumination lamp fitting that can be provided at low costs.SOLUTION: A paired lighting type luminaire, a porch light, 1 comprises a master unit 7 mounted with a master unit light source unit 21 and a slave unit 9 mounted with a slave unit light source unit 21. The master unit 7 comprises a power source unit 15 that performs conversion of commercial power received and outputs the power converted. The master unit light source unit 21 receives the power from the power source unit 15 at the time of lighting. The slave unit 9 is connected to the master unit 13. The slave unit light source unit 21 receives the power converted from the power source unit 15 via the master unit 7 in synchronization with timing of the lighting of the master unit light source unit 21.

Description

  The present invention relates to a pair lighting type lighting device and an illumination lamp including a parent device and a child device.

  Conventionally, there are illumination devices such as a pouch light (entrance light) and a downlight that illuminate the periphery of the outer entrance, and an approach light that illuminates the approach from the gate to the entrance. Such an illuminating device includes, for example, a light source unit, a lamp mounted with the light source unit, and a power supply unit for lighting the light source unit mounted on the lamp. Further, in the lighting device, many combinations with sensors that are turned on only when necessary for the purpose of energy saving and crime prevention are employed.

  On the other hand, in the above-described lighting device, for example, in the case of a wide entrance, since one lighting device is insufficient in brightness to illuminate the entire entrance space, two lighting devices are arranged at an appropriate interval, There has been proposed a type (a pair lighting type) in which the light source units of both lighting devices are simultaneously turned on by a sensor provided in the lighting device. Note that such a pair lighting type lighting device is also referred to as a pair lighting device.

The parent device constituting the pair lighting device includes a parent light source unit, a parent lamp, and a parent power source unit. The parent power supply unit includes a power supply unit that converts received commercial power and supplies power to the parent light source unit mounted on the parent lamp.
On the other hand, the slave unit also includes a slave light source unit, a slave lamp, and a slave power supply unit. Similarly to the parent power supply unit, the child power supply unit also includes a power feeding unit that converts received commercial power and supplies power to the child light source unit.

The parent power supply unit has a connection portion that can be electrically connected to the child power supply unit and can supply commercial power to the connected child device. The child power supply unit of the child device is connected to the parent power supply unit via this connection unit, and receives commercial power from the parent device.
As a result, the power supply unit of the child power supply unit can have the same configuration as the power supply unit of the parent power supply unit, and the electronic components and the like are shared.

JP 2003-109777 A

In recent years, the need for a pair lighting type lighting device has increased. Although the above pair lighting type lighting device has been proposed, it is expensive, and an inexpensive pair lighting type lighting device is required.
An object of this invention is to provide the pair lighting type illuminating device and illumination lamp which can be provided cheaply.

  In order to achieve the above object, a pair lighting type lighting device according to an aspect of the present invention includes a parent device to which a parent light source unit is attached and a child device to which a child light source unit is attached. The lighting device of pair lighting type, wherein the parent device includes a power supply unit that converts received commercial power and outputs DC power, the parent light source unit is connected to the power supply unit, and the child device Is electrically connected to the parent device in a state where the child light source unit is connected in series with the power source unit together with the parent light source unit, and the child light source unit is the power source unit of the parent device. It is characterized by receiving a direct current through

  In order to achieve the above object, a pair lighting type illumination lamp according to an aspect of the present invention includes a master lamp to which a parent light source unit is attached, a slave lamp to which a child light source unit is attached, and a power receiving device. A pair lighting type illumination lamp comprising a power supply unit that converts commercial power and outputs DC power, wherein the master lamp and the slave lamp are connected in series to the power supply unit, and the power supply unit It is characterized by receiving direct current from

According to the configuration of the lighting device described above, since the slave unit receives the direct current converted from the master unit, a power conversion circuit that converts commercial power becomes unnecessary. Thereby, a lighting device can be provided at low cost.
Moreover, according to the structure of the said illumination lamp, since the main lamp and the sub lamp receive DC current from a power supply unit, the power conversion circuit which converts the commercial electric power in a sub lamp becomes unnecessary. Thereby, a lighting fixture can be provided inexpensively.

The perspective view which shows use of a porch light. Explanatory drawing explaining the use condition of a pouch light. The perspective view which looked at the porch light with which the ceiling wall was mounted | worn from the upper side rather than the ceiling wall. The top view which looked at the porch light with which the ceiling wall was mounted | worn from the upper side rather than the ceiling wall. The bottom view which looked at the porch light with which the ceiling wall was mounted | worn from the downward side rather than the ceiling wall. Sectional drawing of a parent lamp. Sectional drawing of a power supply unit. The circuit diagram of an illuminating device. The flowchart of a control circuit part. Sectional drawing of a subunit | mobile_unit. The perspective view which looked at the porch light with which the ceiling wall which concerns on 2nd Embodiment was mounted | worn from the upper side rather than the ceiling wall. Sectional drawing of the main | base station and connection unit which concern on 2nd Embodiment. Schematic which shows the electric power feeding path | route of the illuminating device which concerns on 3rd Embodiment. Sectional drawing of the subunit | mobile_unit which concerns on 3rd Embodiment. The principal part perspective view which shows the mode of the content of the box main body of a subunit | mobile_unit.

  One aspect of the invention is a pair lighting type lighting device including a parent device to which a parent light source unit is attached and a child device to which a child light source unit is attached, the parent device receiving power A power supply unit that converts the commercial power and outputs direct current power, the parent light source unit is connected to the power supply unit, and the slave unit includes the power source unit together with the parent light source unit. The unit is electrically connected to the parent unit in a state of being connected in series with the unit, and the child light source unit receives a direct current through the power supply unit of the parent unit.

  Further, the master unit includes a master lamp to which the master light source unit is detachably mounted, and the slave unit includes a slave lamp to which the slave light source unit is detachably mounted. The attachment / detachment structure of the parent light source unit and the attachment / detachment structure of the child light source unit in the slave unit are the same, and the parent light source unit and the child light source unit have the same configuration. . According to this configuration, the light source unit can be shared.

  Further, the electrical connection between the slave unit and the master unit is performed by a plurality of external wirings connecting the slave lamp and the master lamp, and at least one lamp of the master lamp and the slave lamp is the A plurality of external wiring core wires can be freely inserted and removed, and have quick-connect terminals that are electrically connected to the inserted core wires, and the child lamp has a direct current in a direction opposite to a direct current flowing through the parent light source unit. Has a reverse current preventing means for preventing the current from flowing into the child light source unit. According to this configuration, it is possible to prevent a reverse current from flowing to the child light source unit even if the child device is connected with the external wiring mistaken on the high potential / low potential side.

  Further, the child light source unit has an LED as a light source, and the reverse current prevention means is a diode whose forward direction is the forward current direction of the LED of the child light source unit. When a direct current in the same direction as the forward direction of the LED of the light source unit for the child is received, it is on the downstream side of the light source unit for the child. According to this configuration, the child light source unit can be protected with a simple structure.

  Further, the at least one lamp is the sub lamp, and the sub lamp has an internal wiring for electrically connecting the quick connection terminal and the sub light source unit, and the sub lamp in the internal wiring A lamp-side connector at an end of the light source unit side, the child light source unit has a unit-side connector that is detachably attached to the lamp-side connector, and the diode includes the quick-connect terminal and the It is provided in a conductive path connecting the lamp side connector. According to this configuration, the child light source unit can be protected with a simple structure.

  Further, the child lamp includes a casing having a cylindrical shape whose front side is open and having a partition wall perpendicular to the central axis in the middle of the central axis direction, and the partition wall is connected to the lamp-side connector in a mounted state. The housing has an opening that allows passage through the unit-side connector, and the housing includes a space on the back side of the partition wall, a prevention means accommodating chamber that accommodates the reverse current prevention means, and both the mounted connectors. It has the division part divided into the connector storage chamber to accommodate. According to this configuration, for example, after connecting the lamp-side connector and the unit-side connector on the front side of the partition wall, when the connectors are inserted from the opening of the partition wall to the back side, the mounted connector prevents reverse current. Contact with the means can be prevented.

Moreover, the internal wiring which connects the said diode and the said lamp | ramp side connector is being fixed to the said division part. According to this configuration, it is possible to prevent the electrical connection between the lamp-side connector and the reverse current preventing means from being disconnected when the lamp-side connector is pulled out from the opening of the partition wall to the front side.
One aspect of the invention is a pair comprising a parent lamp mounted with a parent light source unit, a child lamp mounted with a child light source unit, and a power supply unit that converts received commercial power and outputs DC power. A lighting type illumination lamp, wherein the parent lamp and the child lamp are connected in series to the power supply unit and receive a direct current from the power supply unit.

<First Embodiment>
A first embodiment that is an example of the present invention will be described below with reference to FIGS.
1st Embodiment demonstrates the pouch light which is an example of the pair illuminating device provided with a main | base station and a subunit | mobile_unit.
Note that in this specification, a lighting device includes a parent device having a light source unit and a child device having a light source unit, and a lighting device that does not include the light source unit in the lighting device. In other words, a lighting device is a device in which a light source unit is mounted on an illumination lamp. Also, a master unit having a master light source unit mounted on a master lamp is referred to as a master unit, and a slave unit having a slave light source unit mounted on a slave lamp is referred to as a slave unit.
1. Overall Configuration FIG. 1 is a perspective view showing the use of a pouch light, and FIG. 2 is an explanatory diagram for explaining the use state of the pouch light.

For example, the porch light 1 is provided outside the house and in the vicinity of the entrance door 3 (this periphery is hereinafter referred to as “outer entrance periphery”). Here, the porch light 1 is a downlight type, and the porch light 1 is provided on the ceiling wall 5 that projects horizontally above the entrance door 3.
Specifically, the pouch light 1 includes a parent device 7 and a child device 9, and the parent device 7 and the child device 9 are attached to the ceiling wall 5. The master unit 7 and the slave unit 9 are provided at intervals so that the entire area around the outer entrance can be irradiated.

The pouch light 1 lights the parent device 7 and the child device 9 in various lighting modes. The pouch light 1 includes, for example, an illuminance detection sensor, and when it becomes dark at night, the parent device 7 and the child device 9 are lit (dimmed lighting) in the first mode. In FIG. 2A, illustration of the light emitted from the master unit 7 and the slave unit 9 is omitted, but the master unit 7 and the slave unit 9 are dimmed.
Further, the pouch light 1 includes, for example, a human detection sensor. When the person 11 is detected around the outside entrance as shown in FIG. 2B, the parent machine 7 and the child 7 are shown as shown in FIG. The machine 9 lights up in the second mode.

Here, the brightness at the time of lighting in the first mode is lower than the brightness at the time of lighting in the second mode. If the lighting in the second mode is “all lighting”, the lighting in the first mode can be said to be “dimming lighting”.
FIG. 3 is a perspective view of the pouch light mounted on the ceiling wall as viewed from above the ceiling wall. FIG. 4 is a plan view of the pouch light mounted on the ceiling wall as seen from above the ceiling wall. FIG. 5 is a bottom view of the pouch light mounted on the ceiling wall as viewed from below the ceiling wall.

As shown in FIGS. 3 to 5, the parent device 7 includes a parent lamp 13, a power supply unit 15, and a light source unit 21, and the light source unit 21 is attached to the parent lamp 13. The slave unit 9 includes a slave lamp 19 and a light source unit 21. Here, the parent light source unit and the child light source unit have the same configuration, and are hereinafter simply referred to as a light source unit.
The parent lamp 13 and the power supply unit 15 are electrically connected via a wiring cable 23. The master lamp 13 (master unit 7) and the slave lamp 19 are electrically connected via a wiring cable 25. The wiring cables 23 and 25 are arranged outside the lamp and can be said to be external wiring.

The wiring cable is a cable in which a plurality of wires are covered with a covering tube or the like, and the wiring is a cable in which a core wire is covered with an insulating film.
2. Configuration of Each Part (1) Main Unit (1-1) Main Lamp FIG. 6 is a cross-sectional view of the main lamp.

The parent lamp 13 includes a housing 27, a sensor unit 29, and a connection unit 31. The sensor unit 29 and the connection unit 31 are mounted on the housing 27.
(A) Housing The housing 27 has a box shape as a whole. Here, the side from which the light from the light source unit 21 is extracted is the front side, and the direction is orthogonal to the mounting surface 5a (here, the lower surface of the ceiling wall 5) on which the parent lamp 13 is mounted and is opposite to the front side. Is the back side. Note that the direction orthogonal to the mounting surface 5 a is also the thickness direction of the housing 27.

The housing 27 includes a box body 35 that is open on a part of the front side and substantially the entire back side, and a lid 37 that closes the opening on the back side of the box body 35. As shown in FIGS. 3 and 4, the box body 35 includes a first tube portion 39, a second tube portion 41, and a flange portion 42.
Here, in a plan view (in a direction orthogonal to the mounting surface 5a and when viewed from the back side, FIG. 4), for example, the first tube portion 39 has a circular shape, and the second tube portion. 41 has a quadrangular shape.

As shown in FIG. 6, the first cylindrical portion 39 has both ends in the thickness direction of the housing 27 open, and has a partition wall 43 at the approximate center in the thickness direction. The light source unit 21 is detachably mounted on the front side of the partition wall 43 with a predetermined mounting structure.
The peripheral wall 39a located on the front side of the partition wall 43 in the first cylindrical portion 39 has a reflection function so that, for example, light from the light source unit 21 is emitted from the opening 39b on the front side. The peripheral wall 39a may not have a reflecting function.

As shown in FIGS. 5 and 6, the second cylindrical portion 41 has a front wall 45 on the front side, and the back side is open. The front wall 45 has an opening 45a at the center thereof. Here, the opening 45a has a circular shape.
The sensor unit 29 held by the sensor holding body 47 is disposed in the opening 45a. The sensor holding body 47 is mounted (fixed) on the back side of the front wall 45 of the second cylinder portion 41 with a predetermined mounting structure. The predetermined mounting structure is, for example, a screw structure. The sensor holder 47 is described when the sensor unit 29 is described.

As shown in FIG. 6, the first tube portion 39 and the second tube portion 41 have a second tube portion 41 that does not have a side wall that overlaps the first tube portion 39 with respect to the peripheral wall of the first tube portion 39. Are integrally formed in such a state that they come into contact with each other.
A portion of the peripheral wall of the first cylindrical portion 39 that is close to the lid body 37 in the overlapping portion with the second cylindrical portion 41 is cut out (the cutout portion is indicated by “39c”). Thereby, in the housing | casing 27, it has the space which the 1st cylinder part 39 and the 2nd cylinder part 41 connect. This space functions as a wiring accommodating area 35a for electrical connection of the light source unit 21, the sensor unit 29, and the like in the housing 27.

  The back side of the partition wall 43 of the first tube portion 39 functions as a connection region 53 for connecting the unit-side connector 49 from the light source unit 21 and the lamp-side connector 51 on the power supply unit 15 side in the parent lamp 13. To do. Here, the unit side connector 49 is a male connector, and the lamp side connector 51 is a female connector. The lamp-side connector 51 is mounted on the partition wall 43 by a predetermined mounting structure. The predetermined mounting structure is a screwed structure using, for example, a screw member.

  The lid 37 has a function of closing the back side opening of the box body 35 as shown in FIG. In the present embodiment, the lid body 37 has a mounting function for mounting the connection unit 31. The lid body 37 is constituted by, for example, a plate member having an “L” shape. The lid body 37 includes a main plate portion 59 and a sub plate portion 61, and is attached to the box body 35 by a predetermined mounting structure. The predetermined mounting structure is a screwed structure using, for example, a screw member.

As shown in FIG. 6, the main plate portion 59 is located on the back side of the box body 35 and fulfills a lid function. Note that the plan view shape of the main plate portion 59 is substantially the same as the plan view shape of the box body 35. As shown in FIG. 6, the sub-plate portion 61 is located on the side portion of the box body 35 on the second cylinder portion 41 side, and the connection unit 31 is mounted on the outer surface with a predetermined mounting structure. The predetermined mounting structure is, for example, a screwed structure using a screw member.
(B) Sensor Related Here, the sensor unit 29 includes a human detection sensor 65 that detects a person and an illuminance detection sensor 67 that detects illuminance (brightness).

The sensor unit 29 includes a sensor board 69 and a protective member 71 in a sensor case 73 in addition to the human sensor 65 and the illuminance sensor 67. The human detection sensor 65 and the illuminance detection sensor 67 use the opening of the sensor case 73 to detect a person and illuminance.
Here, a type (passive sensor) that detects a temperature change by infrared rays is used as the human detection sensor 65. As the illuminance detection sensor 67, a light receiving element (for example, a photodiode) is used. These sensors 65 and 67 are mounted on a sensor substrate 69.

  Here, the sensor case 73 has a spherical shape as a whole, and has an opening in a portion (front side) corresponding to the position of the human sensor 65. A protective member 71 that protects the sensors 65 and 67 is provided in the opening. Specifically, the opening of the sensor case 73 is closed, and moisture, dust, foreign matter and the like are prevented from entering from the opening. The protective member 71 also has a lens function for condensing infrared rays emitted from a person onto the human detection sensor 65.

Here, the sensor case 73 is composed of two hemispherical bodies 73a and 73b having a hemispherical shape obtained by cutting a sphere substantially parallel to the mounting surface 5a, and sandwiches the sensor substrate 69 and the protective member 71 disposed inside. Here, the opening of the sensor case 73 is provided in the hemisphere 73a located on the front side.
The sensor case 73 (sensor unit 29) is accommodated in the case accommodating body 75 so that the posture can be adjusted. As shown in FIG. 6, the case container 75 is larger than the hemispheres 73a and 73b, and has a shape in which a part of the sphere composed of the hemispheres 73a and 73b is cut out (than the hemispheres 73a and 73b). The shape is close to a sphere.)

  The case container 75 is composed of two parts, a hemispherical main body 75a and a remaining residual body 75b. The inner periphery of the case container 75 has a curved surface (more precisely, a part of a spherical surface) whose radius of curvature is larger than that of the sensor case 73. As a result, the sensor unit 29 is accommodated in the case accommodating body 75 so as to be adjustable in posture. Note that the posture of the sensor unit 29 is maintained by the frictional force between the inner peripheral surface of the case housing 75 and the outer peripheral surface of the sensor case 73.

The case container 75 is attached to the casing 27 using a predetermined mounting structure, here, a screwing structure using a screw member. That is, the screw member (not shown) that penetrates the main body 75 a of the case housing body 75 is screwed into the screw hole in the peripheral portion of the opening in the bottom portion of the second cylindrical portion 41.
(C) Connection unit 31
The connection unit 31 includes a connection terminal 79 and a cover member 81. The connection terminal 79 is for electrically connecting the parent lamp 13 and the child lamp 19 via the wiring cable 25. The cover member 81 covers and protects the connection terminal 79. Here, the wiring cable 25 is a two-core VVF cable. The VVF cable may also indicate “25”.

Since the connection between the parent lamp 13 and the child device 9 is performed at a place where the pouch light 1 is installed, a quick connection terminal is used as the connection terminal 79. Note that the symbol “79” of the connection terminal is also used as the symbol of the quick connection terminal.
When the core wire that has been exposed by removing the insulation coating of the VVF cable 25 is inserted into the insertion hole of the terminal block, the quick connection terminal 79 is connected to the core wire by fixing the core wire with a spring mechanism. Is secured. The fast connection terminal 79 is mounted on the sub-plate portion 61 of the lid body 37 by a predetermined mounting structure, for example, a screwing structure using a screw member, while being covered with the cover member 81.
(D) Others The parent lamp 13 is provided with a mounting structure for fixing the casing 27 to the opening 5b when the casing 27 is inserted into the opening 5b of the ceiling wall 5. Here, a plurality of (for example, three) leaf springs 83 are used as the mounting structure.
(1-2) Light Source Unit As shown in FIG. 6, the light source unit 21 is detachably attached to the parent lamp 13.

The light source unit 21 includes one or more semiconductor light emitting elements (not shown) that are one type of light source. Here, LEDs are used as the semiconductor light emitting elements, and a plurality of LEDs are mounted on the mounting substrate 87. Note that an LED module 89 is formed by mounting a plurality of LEDs on the mounting substrate 87.
The light source unit 21 includes a base 91 on which the LED module 89 is mounted, module mounting (fixing) means 93 for mounting (fixing) the LED module 89 on the base 91, and a cover that covers and protects the LED module 89. 95 and cover mounting means 97 for mounting (fixing) the cover 95 to the base 91.

Here, the LED module 89 has a predetermined shape (for example, a circular shape). The LED module 89 includes a plurality of LEDs and a sealing body 99 in the central portion of the mounting substrate 87.
The plurality of LEDs are electrically connected to the wiring pattern of the mounting substrate 87. The sealing body 99 seals the plurality of LEDs mounted on the mounting substrate 87. For example, a translucent resin material is used for the sealing body 99, and when it is necessary to convert light from the LED into a predetermined wavelength, for example, a wavelength conversion member such as a phosphor is mixed therein.

The base 91 has a disk shape (for example, a disk shape corresponding to the LED module 89). The surface of the base 91 is in contact with the LED module 89, and the back surface is in contact with the housing 27. That is, the LED module 89 to the housing 27 are thermally bonded.
Here, the module mounting means 93 is performed using an engagement (engagement) structure. Specifically, it includes an engaging member 101 that engages with the LED module 89 and a fixing means 103 that attaches (fixes) the engaging member 101 to the base 91.

As shown in FIG. 6, the engaging member 101 has a ring shape, and its inner peripheral portion engages (contacts) with the peripheral portion of the mounting substrate 87 of the LED module 89. Here, the fixing means 103 includes a screw member 105 that penetrates the engaging member 101 and a screw hole 107 provided on the surface of the base 91.
The cover 95 is made of a translucent material (for example, a resin material). As shown in FIG. 6, the cover 95 has a bottomed cylindrical shape, and a bottom portion is provided at the front side end (lower end in FIG. 6), and a flange portion 109 extending outward is provided at the back side end. Have.

Here, the cover mounting means 97 is performed using an engagement (engagement) structure. Specifically, the cover mounting means 97 includes an engagement member 111 that engages with the surface of the flange 109 of the cover 95, and a pressing means 113 that presses the engagement member 111 against the base 91.
As shown in FIGS. 5 and 6, the engaging member 111 has a ring shape, and an inner peripheral portion thereof abuts against the flange portion 109 of the cover 95.

Here, the pressing unit 113 has a function of mounting the engaging member 111 on the base 91 and mounting the light source unit 21 on the parent lamp 13. The pressing means 113 includes a screw member 115 that passes through the engaging member 111 and the base 91 and a screw hole (not shown) provided on the partition wall 43 side of the first cylindrical portion 39 of the housing 27. Is done.
The light source unit 21 includes a wiring cable 117 that is electrically connected to the LED module 89, and a unit-side connector 49 that is provided at the end of the wiring cable 117 opposite to the LED module 89. The unit side connector 49 and the wiring cable 117 are led out to the back side through the opening 43 a of the partition wall 43 of the parent lamp 13.
(1-3) Power Supply Unit (A) Outline The power supply unit 15 converts commercial power and supplies power to the parent lamp 13 and the child lamp 19. Here, DC power (DC current) is supplied to the parent lamp 13 and the child lamp 19. In this embodiment, since there are two types of lighting modes, two types of DC currents having different current values are supplied here.

Specifically, it is a direct current of a first current value (constant) supplied when the lighting mode is the first mode, and is supplied when the lighting mode is the second mode. DC current having a second current value (constant value).
Note that the first current value is smaller than the second current value. For example, the first current value is 20 [%] to 40 [%] with respect to the second current value. The power in the first mode is the first power, and the power in the second mode is the second power.
(B) Configuration The power supply unit 15 includes a power conversion circuit unit 149 that converts commercial power into first power or second power, and a control circuit that controls the feeding of the converted power to the parent lamp 13 and the child lamp 19 Unit 150. Note that the power conversion circuit unit 149 and the control circuit unit 150 may be provided as independent units.

FIG. 7 is a cross-sectional view of the power supply unit.
The power conversion circuit unit 149 includes a plurality of electronic components (for example, a transformer 123) mounted on the power supply board 121, and the control circuit unit 150 includes an electronic component (IC or the like) mounted on the power supply board 121. There are 125).
In addition, the electronic component 123 for power conversion circuit units and the electronic component 125 for control circuit units are also referred to as a plurality of electronic components 123 and 125. Note that only one of “123” is used as the reference numeral for the electronic component of the power conversion circuit unit 149 for the sake of convenience, but there are actually a plurality.

The plurality of electronic components 123 and 125 are stored in the housing 127 in a state where they are mounted on the power supply board 121.
The casing 127 includes a main body portion 129 for mounting the power supply substrate 121 and a cover portion 131 that covers the electronic components 123 and 125.
The main body 129 has a dish shape as shown in FIG. The cover part 131 has a box shape as shown in FIGS. 3, 4 and 7. Here, since the main body 129 has a rectangular shape in plan view, the cover 131 also has a rectangular shape in plan view.

The main body part 129 and the cover part 131 are coupled by a predetermined coupling structure. The predetermined coupling structure is, for example, a screwing structure using a screw member 133.
The cover part 131 is mounted on the ceiling wall 5 and the like with a container part 135 including a main body part 129 and a container for housing the power supply board 121 on which a plurality of electronic components 123 and 125 are mounted. A leg portion 137.

As shown in FIGS. 3 and 7, the leg portion 137 extends from two opposite sides of the container portion 135 toward the ceiling wall 5, and then bends outward along the ceiling wall 5. doing.
A connection unit 139 to which the wiring cable 22 connected to the commercial power source is connected is mounted on the casing 127. The mounting location is not particularly limited, but considering the height of the unit, the side surface of the housing 127 is preferable.

A VVF cable is used as the wiring cable 22. The connection unit 139 includes a connection terminal 141 and a cover member 143. Here, the cover member 143 has a function of covering the connection terminal 141 and a function of mounting on the housing 127 side.
The connection terminal 141 has the same configuration as the connection terminal 79 on the parent lamp 13 side. That is, the connection terminal 141 is a fast connection terminal. Note that the side of the connection terminal 141 opposite to the wiring cable 22 is connected to the power conversion circuit unit 149 via the internal wiring 147.
(1-4) Circuit Configuration FIG. 8 is a circuit diagram of the lighting device.

The power supply unit 15 includes a power conversion circuit unit 149 and a control circuit unit 150.
The power conversion circuit unit 149 includes an input filter unit 151, a rectifier circuit 152, a booster circuit 153, and a step-down circuit 154 from the commercial power supply side.
The input filter unit 151 is for preventing noise intrusion from the commercial power supply side. For example, an inductor or the like can be used as the input filter unit 151.

The rectifier circuit 152 rectifies alternating current from a commercial power source into direct current. The rectifier circuit 152 is constituted by, for example, a diode bridge composed of four diodes.
The booster circuit 153 boosts the DC power rectified by the rectifier circuit 152 to a predetermined voltage. As the booster circuit 153, a so-called boost chopper circuit is used here. The step-up chopper circuit includes a transformer T1 (here, a transformer is used to secure a power source for the IC unit 155), a switching element Q1, and a capacitor C1. The step-up chopper circuit has a transformer T1 connected in series with a step-down chopper circuit, and a switching element Q1 and a capacitor C1 connected in parallel.

  Here, an N-channel FET is used as the switching element Q1, and the switching element Q1 is repeatedly turned on and off by an output signal from the IC unit 155. Capacitor C1 discharges to the step-down circuit 154 side only while switch-on element Q1 is ON. As the capacitor C1, an electrolytic capacitor or the like is used. The IC unit 155 outputs an ON / OFF signal to the switching element Q1 at a predetermined cycle. The ON / OFF duty ratio is preset in accordance with the voltage to be boosted.

  The step-down circuit 154 steps down the voltage boosted by the step-up circuit 153 to one of the first voltage value and the second voltage value in accordance with the lighting mode. Here, the step-down circuit 154 uses a so-called step-down chopper circuit. The step-down chopper circuit includes a transformer T2, a switching element Q2, and a capacitor C4. The step-down chopper circuit is configured such that a transformer T1 and a switching element Q2 are connected in series and a capacitor C4 is connected in parallel to the parent lamp 13 and the slave unit 9 connected in series.

The switching element Q2 is also an N-channel FET, and is repeatedly turned on and off by an output signal from the control circuit unit 150. The ON / OFF duty ratio is set in advance in accordance with the first voltage value and the second voltage value.
The control circuit unit 150 outputs an ON / OFF signal to the switching element Q2. Since the step-down circuit 154 does not step down when the switching element Q2 is OFF, the control circuit unit 150 substantially controls the operation of the step-down circuit 154 of the power conversion circuit unit 149 and the power supply to the main lamp 13 and the sub lamp 19. . Here, while the step-down circuit 154 is operating, the master lamp 13 and the slave unit 9 are lit.

The control circuit unit 150 operates the step-down circuit 154 according to a signal from the human sensor 65 to light the parent lamp 13 and the child device 9 in the second mode (all lighting). The control circuit unit 150 operates the step-down circuit 154 according to a signal from the illuminance detection sensor 67 to turn on the parent lamp 13 and the child device 9 in the first mode (dimming lighting). Switching between the first mode and the second mode is performed by outputting from the control circuit unit 150 a signal in which the ON / OFF duty ratio of the switching element Q2 of the step-down circuit 154 is changed.
(1-5) Control Circuit Unit FIG. 9 is a flowchart of the control circuit unit.

The control circuit unit 150 starts when a switch (not shown) of the lighting device 1 is turned on.
First, the control circuit unit 150 determines whether or not a lighting signal instructing lighting has been received (step S1). The lighting signal here is a signal from the illuminance detection sensor 67 and is a signal indicating the illuminance around the outside entrance. Specifically, a voltage corresponding to the illuminance is output from the illuminance detection sensor 67, and a voltage equal to or lower than a threshold voltage (when dark) is used as a criterion for determining whether or not to turn on. . For example, when the surroundings of the outside entrance are dark, a voltage lower than the threshold voltage (lighting signal) is output from the illuminance detection sensor 67, and when the surroundings of the outside entrance becomes bright, a voltage greater than the threshold voltage (non-lighting signal) Is output).

  If the signal from the illuminance detection sensor 67 is not a lighting signal (“NO” in step S1), the presence / absence of the signal is determined until there is a lighting signal. When the signal from the illuminance detection sensor 67 becomes a lighting signal (“YES” in step S1), “DIM” indicating whether or not the master lamp 13 and the slave unit 9 are dimmed is set to “1”. (Step S2). Here, “DIM = 1” is a case where dimming lighting is performed, and “DIM = 0” is a case where dimming lighting is not performed.

Next, it is determined whether or not “DIM” is “1” (step S3). When “DIM” is “1” (“YES” in step S3), dimming is performed (step S4) and the process proceeds to step S5. At this time, the control circuit unit 150 outputs a signal with a duty ratio for dimming lighting to the switching element Q2.
When “DIM” is not “1”, that is, when “DIM” is “0”, it is not necessary to dim the lights (the area around the outside entrance is dark and should be dimmed, It is a case where the light is turned off after 0:00.), The process proceeds to step S5.

In step S5, it is determined whether or not a signal indicating that a person has been detected around the outside entrance has been received. Here, the human detection signal is a signal from the human detection sensor 65. Specifically, the human detection sensor 65 outputs a “High” signal when a person is detected, and outputs a “Low” signal when no person is detected.
When the signal from the human sensor 65 is a “High” signal (“YES” in Step S5), all lighting is started (Step S6), and the process proceeds to Step S7. At this time, the control circuit unit 150 outputs a signal with a duty ratio for full lighting to the switching element Q2.

On the other hand, if the signal from the human sensor 65 is a “Low” signal in step S5 (“NO” in step S5), the process proceeds to step S12.
In step S <b> 7, it is determined whether there are still people around the outside entrance. Specifically, it is determined whether or not the signal from the human sensor 65 is a “High” signal. When no one is present and the signal of the human sensor 65 becomes a “Low” signal (“NO” in step S7), the process proceeds to step S8, and a timer is started (step S8).

For example, when 3 minutes have elapsed since the timer was started (“YES” in step S9), it is determined whether “DIM” is “1”. This is because the lighting mode after the absence of a person differs depending on whether the person is sensed whether the dimming is on or off (for example, after midnight).
In step S10, when it is determined that “DIM” is “1” (“YES”), the dimming light is turned on before a person is sensed, so that the lighting is switched from full lighting to dimming lighting. (Step S11). At this time, the control circuit unit 150 outputs a signal to the switching element Q2 by changing the duty ratio from full lighting to dimming lighting.

On the other hand, if it is determined in step S10 that “DIM” is not “1” (“NO”), it is in the extinguished state before a person is sensed, so the process proceeds to step S14 and the light is extinguished. At this time, the control circuit unit 150 outputs an OFF signal to the switching element Q2.
When the lighting mode is switched to dimming lighting in step S11, it is determined whether or not the current time is after midnight (step S12). If it is determined after 0:00 (“YES”), it is not necessary to turn on the light, “DIM” is set to “0” (step S13), and the light is turned off (step S14). .

Then, when the switch of the illumination device 1 is turned off (“YES” in step S15), the process is terminated. When the switch is not turned off (“NO” in step S15), the process proceeds to step S16.
In step S16, it is determined whether a lighting signal has been received. When the signal from the illuminance detection sensor 67 is a lighting signal (“YES”), the vicinity of the outer entrance is still dark, and the process proceeds to step S3.

On the other hand, if the signal from the illuminance detection sensor 67 is not a lighting signal in step S16 ("NO"), the surroundings of the exterior entrance become bright, and even when a person is sensed, it is not necessary to turn on all the lights. Yes, "DIM" is set to "0" (step S17), and the process returns to step S1.
(2) Handset FIG. 10 is a cross section of the handset.

The slave unit 9 includes a slave lamp 19 and a light source unit 21. The sub lamp 19 includes a housing 157 and a connection unit 159. The light source unit 21 is detachably attached to the sub lamp 19 (housing 157).
The light source unit 21 has the same configuration as that of the light source unit 21 described in the parent device 7, and thus the description of the configuration is omitted. Further, since the connection unit 159 has the same configuration as the connection unit 31 described in the base unit 7, the description of the configuration is omitted.

The housing 157 has a box shape as a whole. Here, similarly to the master unit 7, the side from which the light from the light source unit 21 is extracted is referred to as the front side, and is orthogonal to the mounting surface 5a (here also the lower surface of the ceiling wall 5) on which the slave unit 9 is mounted. The direction opposite to the front side is called the back side. The direction orthogonal to the mounting surface 5a is also referred to as the thickness direction of the housing 157.
The housing 157 includes a box body 161 that opens on the front side and the back side, and a lid 163 that closes the opening on the back side of the box body 161. As shown in FIGS. 3 and 4, the box body 161 includes a cylindrical portion 165 and a flange portion 167. Here, in a plan view (in a direction orthogonal to the mounting surface and when viewed from the back side, for example, the state of FIG. 4), for example, the cylindrical portion 165 has a circular shape.

  As shown in FIG. 10, the cylindrical portion 165 has a partition wall 169 at the approximate center in the thickness direction (also in the central axis direction of the cylindrical portion). A light source unit 21 is mounted on the front side of the partition wall 169. The peripheral wall 165a located on the front side of the partition wall 169 in the cylindrical portion 165 has a reflection function so that, for example, light from the light source unit 21 is emitted from the opening 165b on the front side.

  The sub lamp 19 receives power from the master unit 7 and turns on the light source unit 21. That is, the child lamp 19 directly receives power from the power supply unit 15 via the parent lamp 13. Specifically, the child lamp 19 is connected to the wiring cable 25 connected to the parent lamp 13 side by a connection terminal (fast connection terminal) 160 of the connection unit 159, and the connection unit 159 and the light source unit 21 are used for internal wiring. 172 is connected.

The internal wiring 172 is provided with a lamp-side connector 173 that is detachably attached to the unit connector 171 of the light source unit 21. The attached connectors 171 and 173 are accommodated in a space behind the partition wall 169 in the cylindrical portion 165.
Specifically, the back side of the partition wall 169 of the cylindrical portion 165 is a socket mounting region 175 for mounting the lamp-side connector 173 connected to the parent lamp 13 side connected to the unit-side connector 171.

Here, the unit side connector 171 is a male connector, and the lamp side connector 173 is a female connector. The lamp side connector 173 is attached to the partition wall 169 by a predetermined attachment structure. The predetermined mounting structure is a screwed structure using, for example, a screw member, similarly to the parent lamp 13.
As shown in FIG. 10, the lid 163 has a function of closing the back-side opening of the box body 161. The lid 163 has a mounting function for mounting the connection unit 159. The lid body 163 is composed of a plate member having an “L” shape. The lid 163 includes a main plate portion 177 and a sub plate portion 179, and is attached to the box body 161 by a predetermined joining structure. The predetermined joining structure is a screwed structure using a screw member.

As shown in FIG. 10, the main plate portion 177 is located on the back side of the box body 161 and performs a lid function. The main plate portion 177 substantially matches the shape of the box body 161 in plan view. As shown in FIG. 10, the sub-plate portion 179 performs the mounting function of the connection unit 159.
The subunit | mobile_unit 9 is provided with the mounting mechanism for fixing the housing | casing 157 with respect to opening, when the subunit | light_lamp 19 is inserted in the opening 5b of the ceiling wall 5. FIG. Here, the mounting mechanism uses a plurality of leaf springs 181 as in the case of the parent lamp 13.
3. Usage Method The slave unit 9 is connected to the master unit 7 via the wiring cable 25. A VVF cable is used as the wiring cable 25, and a quick connection terminal is used as the connection terminal 79 of the connection unit 37 of the parent device 7 and the connection terminal of the connection unit 159 of the child device 9. For this reason, in the installation place of the illuminating device 1, what is necessary is just to match | combine the length of a VVF cable with the space | interval of the main lamp 13 and the sub lamp 19, and a VVF cable can be used efficiently and without waste.

The slave unit 9 is electrically connected to the master unit 7 and directly receives power from the power supply unit 15 of the master unit 7. For this reason, the subunit | mobile_unit 9 does not need to be provided with the conversion circuit for converting commercial electric power into the electric power supplied to the light source unit 21, and while being able to simplify the structure of a subunit | light_lamp, it can provide cheaply.
Furthermore, since the light source unit 21 is configured to be freely mounted regardless of the master unit 7 and the slave unit 9, it is possible to share parts and the light source unit that can be mounted on the master unit 7 and the slave unit 9 An inexpensive light source unit can be provided as compared with the case where the specifications of are different.
<Second Embodiment>
In the first embodiment, a wiring cable (VVF cable) 25 and a quick connection terminal 79 are used for electrical connection between the parent lamp 13 and the child lamp 19, and the quick connection terminal 79 is connected to the housing 27 of the parent lamp 13. It was installed.

However, the quick connection terminal may be provided as a connection unit independent of the parent lamp and the child lamp. 2nd Embodiment demonstrates the porch light (illuminating device) which provided the connection unit provided with a quick connection terminal independently.
FIG. 11 is a perspective view of the pouch light mounted on the ceiling wall according to the second embodiment as seen from above the ceiling wall. FIG. 12 is a cross-sectional view of the base unit and the connection unit according to the second embodiment.

As shown in FIG. 11, the pouch light 301 according to the second embodiment includes a master lamp 305 and a slave unit 9. The parent lamp 305 includes a power supply unit 15, a parent lamp 305, and a connection unit 307.
The power supply unit 15 and the child device 9 constituting the pouch light 301 according to the second embodiment have the same configuration as the power supply unit 15 and the child device 9 described in the first embodiment. For this reason, the same code | symbol as the power supply unit and subunit | mobile_unit in 1st Embodiment is used here, and description of the structure is abbreviate | omitted. Hereinafter, the main lamp 305 and the connection unit 307 will be mainly described.
(1) Master Unit The master lamp 305 has many common parts with the master lamp 13 in the first embodiment. The same components as those of the master lamp 13 are denoted by the same reference numerals, and the description of the configuration is omitted.

As shown in FIGS. 11 and 12, the parent lamp 305 includes a housing 309, a light source unit 21, and a sensor unit 29. The light source unit 21 and the sensor unit 29 have the same configuration as the light source unit 21 and the sensor unit 29 according to the first embodiment shown in FIG.
The housing 309 includes a box body 311 and a lid 313 that closes the opening of the box body 311. The housing 309 has substantially the same configuration as that of the housing 27 according to the first embodiment, except that the connection unit 307 is not attached to the lid 313, and a through hole for wiring (wiring cable) in the box body 311. This is different from the first embodiment in that is not provided.

Since the box body 311 is different from the box body 35 in the first embodiment only in the presence or absence of the through holes, the description thereof is omitted.
The lid 313 is composed of a plate member as shown in FIGS. 11 and 12. The plan view shape of the lid 313 is the same as the plan view shape of the box body 311. The lid body 313 has a lead-out hole 317 for leading out a wiring cable 315 for electrical connection with the slave unit 9. Note that a packing 319 for preventing dust and the like from entering the housing 309 from the lead-out hole 317 is provided in the lead-out hole 317.
(2) Connection unit The connection unit 307 includes a wiring cable 315 led out from the lead-out hole 317 of the parent lamp 305 and a wiring cable (VVF cable) connected to the connection unit 159 of the slave unit 9 as shown in FIG. 25 has a terminal function.

As shown in FIG. 12, the connection unit 307 includes a connection terminal 325 that detachably connects the wiring cable 315 and the wiring cable 25. The connection terminal 325 has the same configuration as the connection terminal 79 of the parent lamp 13 of the first embodiment, and is a so-called quick connection terminal.
In addition to the connection terminal 325, the connection unit 307 includes a base 327 that supports the connection terminal 325 and a cover member 329 that covers the connection terminal 325. A cover member 329 is attached to the base 327 so as to cover the connection terminal 325.

The connection of the wiring cable (VVF cable) 315 in the connection terminal 325 is the same as the connection of the wiring in the first embodiment.
<Third Embodiment>
In the third embodiment, reverse current prevention means is provided on the downstream side of the light source unit of the slave unit to prevent a current flowing in the direction opposite to the current flowing through the light source unit of the master unit from flowing into the light source unit of the slave unit. . Here, the direction of the current flowing in the opposite direction to the current flowing through the light source unit of the master unit is the same as the reverse direction of the LED of the light source unit of the slave unit.

Moreover, in 3rd Embodiment, it is set as the free state, without fixing the connector which electrically connects the child lamp of a subunit | mobile_unit, and a light source unit to a child lamp.
Hereinafter, the lighting device 401 according to the third embodiment will be described. In addition, the same structure as the structure demonstrated in 1st Embodiment or 2nd Embodiment uses the same code | symbol, and abbreviate | omits the description.

FIG. 13 is a schematic diagram illustrating a power feeding path of the lighting apparatus according to the third embodiment. FIG. 14 is a cross-sectional view of the slave unit according to the third embodiment, and FIG. 15 is a perspective view of the main part showing the contents of the box body of the slave unit.
As in the first embodiment, the lighting device 401 according to the third embodiment includes a parent device 7 and a child device 403 as shown in FIG. The master unit 7 has the same configuration as that of the first embodiment, and includes a master lamp 13, a power supply unit 15, and a light source unit 21.

The slave unit 403 includes a slave lamp 405 and the light source unit 21. The slave unit 403 is electrically connected to the master unit 7 via the wiring cable 25 (external wiring), and the light source unit 21 receives power from the power supply unit 15 of the master unit 7. As shown in FIG. 14, the child lamp 405 includes a housing 407, a connection unit 409, and a wiring unit 411.
The housing 407 includes a box body 413 and a lid body 163 as in the first embodiment. The box body 413 includes storage portions 415 and 419 in addition to the cylindrical portion 165 and the flange portion 167. The cylinder part 165 and the collar part 167 have the same configuration as in the first embodiment.

The back side of the partition wall 169 of the cylindrical portion 165 is partitioned into two large and small spaces (415, 419). The smaller space is the prevention means accommodation chamber 415. A reverse current preventing means 431 is accommodated in the accommodation chamber 415. The larger space is the connector housing chamber 419. Connectors 171 and 429 are accommodated in the accommodation chamber 419.
The two storage chambers 415 and 419 are partitioned by a partitioning section. The partition portion includes two plate portions 423 and 425 extending from the inner wall of the cylindrical portion 165 toward the central axis side, and a connecting portion that connects the two plate portions 423 and 425 at a portion where the two plate portions 423 and 425 intersect. 427. That is, the storage chambers 415 and 419 are configured by the two plate portions 423 and 425 and the connecting portion 427.

The connection unit 409 includes a connection terminal (fast connection terminal) 79 and a cover member 81. The connection unit 409 is attached to an L-shaped lid body 163. Note that the connection terminal 79 in the third embodiment is mounted such that two wires are arranged in a direction perpendicular to the height direction of the cylindrical portion 165. For this reason, only one wiring appears in FIG.
The wiring unit 411 is for electrically connecting the connection terminal 79 and the light source unit 21 (unit connector 171 thereof). The wiring unit 411 includes a lamp-side connector 429, a reverse current prevention unit 431, and a reverse current prevention unit 431.

The lamp side connector 429 is for connecting to the unit side connector 171. Again, a female connector is used as the lamp-side connector 429.
The lamp-side connector 429 and the unit-side connector 171 are housed in the connector housing chamber 419 of the housing 407 in a state where they are connected to each other. The connectors 429 and 171 are not fixed in the housing 407 but are stored in a movable state. The connected connectors 429 and 171 are pulled out to the front side (light source unit 21) through the opening 169a in the partition wall 169 of the cylindrical portion 165, or pushed into the back side through the opening 169a (in / out). It ’s free.) That is, the partition wall 169 has an opening 169a that allows the connectors 429 and 171 in the attached state to pass therethrough.

  The wiring cable 433 is for connecting the connection unit 409 and the lamp-side connector 429. The wiring cable 433 includes a pair of internal wirings 435 and 437. Among the wiring cables 433, the reverse current prevention means 431 is connected between the connection terminal 79 and the lamp-side connector 429 on the low-potential-side internal wiring 437. That is, the internal wiring 437 includes an internal wiring 437 a that connects the connection terminal 79 and the reverse current prevention means 431, and an internal wiring 437 b that connects the reverse current prevention means 431 and the lamp side connector 429.

The prevention means accommodation chamber 415 accommodates the reverse current prevention means 431 and the internal wirings 437 a and 437 b connected to the reverse current prevention means 431. At this time, the reverse current prevention means 431 and the internal wirings 437a and 437b have a U-shape in which the internal wirings 437a and 437b extend from the reverse current prevention means 431 in a direction orthogonal to the reverse current prevention means 431. .
As the reverse current preventing means 431, for example, a diode 441 can be used. Here, the diode 441 is covered with an insulating tube 443. Note that the reverse current prevention means 431 can also be configured by other electronic components such as a transistor and a resistor.

The reverse current prevention unit 431 is indirectly fixed in the housing 407 by the wiring fixing unit 445. Specifically, the internal wiring 435 and the internal wiring 437 b are fixed to the housing 407 by the wiring fixing means 445. Thereby, the reverse current preventing means 431 is fixed.
The wiring fixing unit 445 includes a gripping member 447 that grips the internal wirings 435 and 437 b and a fixing member 449 that fixes the gripping member 447 to the housing 407. Here, the grip member 447 is formed by integrating a grip portion 453 and a fixed portion 455.

Specifically, the grip portion 453 is configured by a binding band (Insulok (registered trademark)), and the fixing portion 455 has a through hole. The fixing member 449 includes a screw member 457 that is inserted through the through hole of the fixing portion 455, and the screw member 457 is screwed into a screw hole formed on the housing 407 side.
The gripping portion 453 here is a binding band configured such that the band can be inserted only in one direction with respect to the insertion hole, and does not come out in the other direction, which is the direction in which the band is pulled out. May be tied by hand.

Alternatively, wiring (at least wiring on the side where the reverse current prevention means is provided) is arranged between a pair of gripping members with a predetermined interval, and the distance between the pair of gripping members is narrowed by a screw member or the like. It is also possible to hold the wiring. In this case, it can be carried out by fixing at least one of the pair of gripping members to the casing by a fixing means such as a screw member.
Further, for example, a through hole may be provided in the partition part, and the wiring may be bound by a band (including a string) that passes through the through hole. In this case, the fixed portion is also used by the grip portion (band).

Furthermore, the wiring fixing means only needs to be able to fix the internal wirings 435 and 437b in the housing 407. For example, a pressing structure that presses a contact member that comes into contact with the internal wiring to the inner surface of the housing using, for example, a screw member. May be used.
Alternatively, for example, disconnection of the reverse current preventing means can be prevented by providing a through hole in the partitioning portion and connecting the wiring so as to have a knot larger than the through hole of the partitioning portion in the prevention means accommodating chamber. Also in the example of such a knot, it functions as a fixing means for fixing the wiring. That is, the wiring fixing means is configured by the wiring having a locally large diameter and the through-hole formed in the partitioning portion that does not allow passage of the large-diameter portion.

In the third embodiment, both connectors 429 and 171 in the connected (attached) state can be inserted into and removed from the front and back of the partition wall 169 through the opening 169a of the partition wall 169, so that the light source unit 21 is replaced or the like. In addition, the connectors 429 and 171 can be taken out from the opening 169a in the partition wall 169 to the light source unit 21 side to work.
At this time, the internal wiring 437b is fixed between the reverse current prevention means 431 and the lamp side connector 429, and the internal wiring 435 is also fixed in accordance with the fixing of the internal wiring 437b. For this reason, even if an excessive load acts on the connectors 429, 171 and the like when the connectors 429, 171 are pulled out from the opening 169a to the front side, the connection with the reverse current preventing means 431 is prevented from being disconnected. it can.

Further, since the reverse current prevention means 431 is accommodated in the prevention means accommodation chamber 415 in the housing 407, the replacement of the light source unit 21 is completed and the connectors 429 and 171 are placed on the back side of the partition wall 169 in the housing 407. Also when returning, the connectors 429 and 171 and the reverse current prevention means 431 do not come into contact with each other.
The sub lamp 405 includes reverse current prevention means 431 on the energization path connected to the low potential side of the light source unit 21. For this reason, for example, even when the connection of the VVF wiring cable 25 connecting the parent device 7 and the child device 403 on the child device 403 side is mistaken between the high potential and the low potential, the reverse current flows in the LED of the light source unit 21. Can be prevented from flowing.
<Modification>
As mentioned above, although the structure of this invention was demonstrated based on the 1st-3rd embodiment, this invention is not restricted to the said embodiment. For example, it may be a lighting device that is a combination of the configurations described in the embodiments and the configurations described in the following modifications. Furthermore, it is possible to appropriately change the configuration of the lighting device without departing from the scope of the technical idea of the present invention.
1. Light source unit (1) Types of light source The light source unit 21 described in the embodiment includes a plurality of LEDs. That is, although a semiconductor light emitting element is used as a light source, a semiconductor light emitting element other than an LED (for example, a laser diode or an organic light emitting element) may be used.
(2) Master Unit and Slave Unit The light source unit 21 described in the embodiment can be attached to the master lamp 13 and the slave unit 9 as well. That is, the light source unit 21 is shared by the master lamp 13 and the slave unit 9. However, the light source unit of the parent device and the light source unit of the child device may not have the same specifications. For example, the number of semiconductor light emitting elements in the slave unit may be different from the number of semiconductor light emitting elements in the master unit (the illuminance may be different between the master unit and the slave unit).
(3) Removable The light source unit 21 described in the embodiment is configured to be detachably attached to the parent device or the child device. However, when a semiconductor light-emitting element is used as the light source, the life as the light source is prolonged, the light source unit need not be replaced, and the light source unit may be fixedly attached to the parent device or the child device. .
2. Main Unit and Sub Unit (1) Sensor Unit In the embodiment, only the main lamp 13 is provided with the sensor unit 29. However, the master unit does not have to include the sensor unit. In this case, the casing of the master unit may be configured similarly to the casing of the slave unit. Further, the slave unit may include a sensor unit. Further, both the parent device and the child device may include a sensor unit. In this case, the slave unit has the same configuration as the master unit in the embodiment.

As described above, if the master unit includes a sensor unit or the slave unit includes a sensor unit, it becomes impossible to distinguish between the master unit and the slave unit. The one nearer to (the upstream side) may be used as the master unit.
(2) Arrangement | positioning position The main lamp 13 and the subunit | mobile_unit 9 in embodiment are provided in the ceiling wall. However, the pouch light according to the embodiment may be provided at a position other than the ceiling wall. As other than the ceiling wall, for example, there is a wall around the entrance where the entrance is provided. In this case, the master unit and the slave unit may be provided on both sides of the entrance toward the entrance.
(3) Supply Current In the embodiment, the light source unit 21 of the parent device 7 and the light source unit 21 of the child device 9 are connected in series, and a direct current is supplied to each light source unit 21. That is, a circuit having a predetermined function may be provided between the light source unit 21 of the parent device 7 and the light source unit 21 of the child device 9.

For example, by providing a resistance element in parallel with the light source unit of the slave unit, the current value flowing through the light source unit of the master unit and the current value flowing through the light source unit of the slave unit may be changed. Thereby, the illuminating device from which illumination intensity differs with a main | base station and a subunit | mobile_unit can be obtained.
3. Sensor unit In the embodiment, the sensor unit is present in the master unit. Further, in the above modification, the configuration in which the sensor unit is present in the slave unit has been described. However, the sensor unit may be configured not to be included in the parent device or the child device. In this case, the sensor unit may be provided around the entrance alone.
4). Lighting Device (1) Type In the embodiment, a pouch light in which a parent device and a child device are provided outside the entrance and above the entrance as the lighting device for pair lighting has been described. However, it may be a pouch light that is a wall provided with an entrance door and is provided on both the left and right sides of the entrance door toward the entrance door.

Moreover, it is applicable also to other illuminating devices other than a porch light. Other lighting devices include lighting devices that are lit inside and outside the entrance, and approach lights that light the approach from the gate to the entrance. In the case of an approach light, the parent device and the child device are provided on the ground.
In the embodiment, the main lamp and the sub lamp are embedded in the ceiling, the wall, etc., but other types may be used. As another type, for example, a type in which the parent lamp and the child lamp are suspended from the ceiling may be used, or a type in which the parent lamp and the child lamp are attached to a flat surface of a ceiling or a wall. good.
(2) Lighting mode In the embodiment, the parent lamp 13 and the slave unit 9 are lit in two types of lighting modes. The two types of lighting modes are dimming lighting and full lighting. However, the master unit and the slave unit may be lit in three or more types of lighting modes. Further, the master unit and the slave unit may be lit in one kind of lighting mode that is lit only when a person is detected.
(3) Pair lighting In the embodiment, the parent device and the child device are connected in series, and the parent device and the child device are lit in the same mode. However, the lighting modes of the parent device and the child device may be different. For example, only the parent device may be turned on in the first mode when the surroundings are dark, and the pair device may be turned on so that the parent device and the child device are turned on in the second mode when a person is detected. In this case, when the slave unit is connected in parallel to the master unit and the switching element is arranged in the energization path to the slave unit, and the control circuit unit receives a signal for detecting a person, the connection to the slave unit (switching element) ) Can be implemented.
5. Master Unit and Power Supply Unit In the embodiment, the power supply unit 15 and the master lamp 13 are configured separately. However, the power supply unit and the parent lamp may be stored in one casing, that is, the power supply unit and the parent lamp may be integrated. Specifically, the power conversion circuit unit and the control circuit unit stored in the housing of the power supply unit may be stored in the housing of the parent lamp.

DESCRIPTION OF SYMBOLS 1 Porch light 7 Parent machine 9 Child machine 13 Parent lamp 15 Power supply unit 19 Sub lamp 21 Light source unit

Claims (8)

A lighting device of a pair lighting type comprising a parent device to which a parent light source unit is attached and a child device to which a child light source unit is attached,
The parent device includes a power supply unit that converts received commercial power and outputs DC power, and the parent light source unit is connected to the power supply unit,
The slave unit is electrically connected to the master unit in a state where the slave light source unit is connected in series with the power source unit together with the master light source unit,
The child light source unit receives a direct current through the power supply unit of the parent device.
The master unit includes a master lamp to which the master light source unit is detachably attached,
The slave unit includes a slave lamp to which the slave light source unit is detachably mounted,
The attachment / detachment structure of the parent light source unit in the parent device and the attachment / detachment structure of the child light source unit in the child device are the same,
The lighting device according to claim 1, wherein the parent light source unit and the child light source unit have the same configuration.
The electrical connection between the slave unit and the master unit is performed by a plurality of external wirings connecting the slave lamp and the master lamp,
At least one lamp of the parent lamp and the child lamp includes a quick-connect terminal that can freely insert and remove the core wires of the plurality of external wirings and is electrically connected to the inserted core wires,
The illumination according to claim 2, wherein the child lamp includes a reverse current preventing unit that prevents a direct current flowing in a direction opposite to a direct current flowing through the parent light source unit from flowing into the child light source unit. apparatus.
The child light source unit has an LED as a light source,
The reverse current prevention means is a diode whose forward direction is the forward current direction of the LED of the child light source unit,
4. The illumination according to claim 3, wherein the arrangement position of the diode is on the downstream side of the child light source unit when receiving a direct current in the same direction as the forward direction of the LED of the child light source unit. 5. apparatus.
The at least one lamp is the child lamp;
The child lamp has an internal wiring for electrically connecting the quick connection terminal and the child light source unit,
A lamp-side connector at the end of the child light source unit in the internal wiring;
The child light source unit has a unit side connector that is detachably attached to the lamp side connector,
The lighting device according to claim 4, wherein the diode is provided in a conductive path connecting the quick connection terminal and the lamp-side connector.
The child lamp includes a casing having a cylindrical shape with an open front side and a partition wall perpendicular to the central axis in the middle of the central axis direction,
The partition wall has an opening that allows passage of the lamp-side connector and the unit-side connector in a mounted state,
The housing includes a partition section that divides a space on the back side of the partition wall into a prevention means accommodation chamber that accommodates the reverse current prevention means and a connector accommodation chamber that accommodates both the mounted connectors. The lighting device according to claim 5, wherein
The lighting device according to claim 6, wherein an internal wiring that connects the diode and the lamp-side connector is fixed to the partition portion.
A parent lamp to which a parent light source unit is mounted;
A child lamp to which the child light source unit is mounted;
A pair lighting type lighting fixture comprising: a power supply unit that converts received commercial power and outputs DC power;
The parent lamp and the child lamp are connected in series to the power supply unit, and receive direct current from the power supply unit.

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